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General Category => Yamaha FJ1100 / FJ1200 Running Problems => Topic started by: JPaganel on July 09, 2013, 09:50:19 PM

Title: Weird problem
Post by: JPaganel on July 09, 2013, 09:50:19 PM
I had no issues on the way to work this morning. On the way back I started with choke, as usual, turned it of in a little while. Then, about ten miles down the road the idle kicked up to 3000. It stayed that way almost all the way home, and then dropped back to normal.

The throttle didn't seem to be stuck or binding in any way. The idle has been smooth for a month or more.

I don't get it.
Title: Re: Weird problem
Post by: FJmonkey on July 09, 2013, 09:54:39 PM
Quote from: JPaganel on July 09, 2013, 09:50:19 PM
I had no issues on the way to work this morning. On the way back I started with choke, as usual, turned it of in a little while. Then, about ten miles down the road the idle kicked up to 3000. It stayed that way almost all the way home, and then dropped back to normal.

The throttle didn't seem to be stuck or binding in any way. The idle has been smooth for a month or more.

I don't get it.

Vacuum leak maybe???
Title: Re: Weird problem
Post by: JPaganel on July 09, 2013, 11:18:42 PM
Figured it out.

It was the damnedest thing. While I was changing the starter out the other day the vacuum hose to what  I think is the ignition module slipped out of place and today it, apparently, got caught in the enrichment valve linkage. Basically, I was running with the choke on.
Title: will not start
Post by: chiz on July 10, 2013, 11:25:33 AM
Bloody Hell
I put the tank back on for the um-teenth time put some gas in it and guess what...it bleeeping wont start, what the bleep.. Thing is I know when I try again in a few hours it will start.
  I now honestly think that if this tank was located a decent height above the carbs I would not have a problem..
The blasted fuel line basically runs horizontally across the top of air box then has to dribble into the "T" that feeds the carbs,,,, the diagram on top of the air box basically depicts this, dammit.
Lez :wacko3: :wacko3:
Title: Re: Weird problem
Post by: fj11.5 on July 10, 2013, 04:33:42 PM
Easy fix, remove the box,and fit uni pods from RPM,  ,is the fuel line from the tap, going under the two inlets  :empathy:
Title: Re: Weird problem
Post by: chiz on July 10, 2013, 11:59:10 PM
So  right but don't want to go there yet./. Have heard that taking the air box off causes other running problems and that CVcarbs don't like a lot of turbulent air around them as youwould get with pod filters. Any of these points worthy? :bomb:
Title: Re: Weird problem
Post by: racerrad8 on July 11, 2013, 12:17:08 AM
Quote from: chiz on July 10, 2013, 11:59:10 PM
Any of these points worthy? :bomb:

Nope

Randy - RPM
Title: Re: Weird problem
Post by: Flynt on July 11, 2013, 12:26:41 AM
Quote from: racerrad8 on July 11, 2013, 12:17:08 AM
Quote from: chiz on July 10, 2013, 11:59:10 PM
Any of these points worthy? :bomb:

Nope

Randy - RPM

+1